[Solved] program calling default constructor? [closed]

by


As you have not shown your whole program, so its hard to tell where is the error, but it might be in the default constructor of the doctor class.

Anyways here is the code that you can refer. It will give the correct output.

Here is the link you can refer to see the execution order
http://javabeginnerstutorial.com/learn-by-example-3/order-of-execution-of-blocks-in-java/

Java Constructors – Order of execution in an inheritance hierarchy

class GfG {
    public static void main(String[] args) {

        Staffmember aStaffMember = new Staffmember("Steven", "bob");
        System.out.println(aStaffMember.toString());

        Programmer appleprg = new Programmer("Marion", "bob", "Java");
        appleprg.getLanguage();
        System.out.println(appleprg.toString());

        Doctor dr = new Doctor();
        dr.setWard(5);
        dr.setFirstName("ed");
        dr.setLastName("fall");

        System.out.println(dr.toString());

    }
}

class Staffmember {
    String firstName;
    String lastname;

    public Staffmember(String firstName, String lastname) {
        super();
        this.firstName = firstName;
        this.lastname = lastname;
    }

    @Override
    public String toString() {
        return "Staff Member firstName=" + firstName + ", lastname=" + lastname;
    }

}

class Programmer {
    String firstName;
    String lastName;
    String Language;

    public String getLanguage() {
        return Language;
    }

    public void setLanguage(String language) {
        Language = language;
    }

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    public Programmer(String firstName, String lastname, String Language) {
        super();
        this.firstName = firstName;
        this.lastName = lastname;
        this.Language = Language;
    }

    @Override
    public String toString() {
        return "Programmer firstName=" + firstName + ", lastName=" + lastName + ", Language=" + Language;
    }

}

class Doctor {
    int ward;
    String firstName;
    String lastName;

    public void setWard(int ward) {
        this.ward = ward;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public void setLastName(String lastname) {
        this.lastName = lastname;
    }

    public Doctor(int ward, String firstName, String lastName) {
        super();
        this.ward = ward;
        this.firstName = firstName;
        this.lastName = lastName;
    }

    @Override
    public String toString() {
        return "Doctor ward=" + ward + ", firstName=" + firstName + ", lastName=" + lastName;
    }

}

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solved program calling default constructor? [closed]